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Analysis

  • max time kernel
    148s
  • max time network
    150s
  • platform
    windows7_x64
  • resource
    win7-20240220-en
  • resource tags

    arch:x64arch:x86image:win7-20240220-enlocale:en-usos:windows7-x64system
  • submitted
    19/04/2024, 07:39

General

  • Target

    2024-04-19_b9b14909be833659df678c64a37e0b17_cryptolocker.exe

  • Size

    96KB

  • MD5

    b9b14909be833659df678c64a37e0b17

  • SHA1

    58a76e0890b0f4ae39307b015f756215d453bd94

  • SHA256

    afb7545cd4d174f830cf1b4ec248feecbad2fd855386fd4494bf22ccc0e8b0f5

  • SHA512

    771bbdf0cbce6740706d8278c18c5ffa54981e71de1322028a041b21db338394c3acd2fe55ae2f1084e5250a3f2c98f58de21987511090abac3ede01ca5d0cdb

  • SSDEEP

    1536:zj+soPSMOtEvwDpj4ktBl01hJl8QAPM8Ho6cRDjgx/bS:zCsanOtEvwDpjB+

Score
9/10
upx

Malware Config

Signatures

  • Detection of CryptoLocker Variants 4 IoCs
  • Detection of Cryptolocker Samples 4 IoCs
  • UPX dump on OEP (original entry point) 4 IoCs
  • Executes dropped EXE 1 IoCs
  • Loads dropped DLL 1 IoCs
  • UPX packed file 4 IoCs

    Detects executables packed with UPX/modified UPX open source packer.

  • Enumerates physical storage devices 1 TTPs

    Attempts to interact with connected storage/optical drive(s).

  • Suspicious use of WriteProcessMemory 4 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\2024-04-19_b9b14909be833659df678c64a37e0b17_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-04-19_b9b14909be833659df678c64a37e0b17_cryptolocker.exe"
    1⤵
    • Loads dropped DLL
    • Suspicious use of WriteProcessMemory
    PID:2852
    • C:\Users\Admin\AppData\Local\Temp\misid.exe
      "C:\Users\Admin\AppData\Local\Temp\misid.exe"
      2⤵
      • Executes dropped EXE
      PID:2956

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • \Users\Admin\AppData\Local\Temp\misid.exe

    Filesize

    96KB

    MD5

    f27b7a1f420b3fcd0209c26db33be431

    SHA1

    f207e13c0c0a4d2b7f7e89481cd11d7b3534a867

    SHA256

    34664888d9e17938075008a9b11448c54d110be1d23bc728f2e96d4ab8dcd9d9

    SHA512

    75a384cd99531309d2d395d5252298d1526cdd4ee7913de1811fb6dd6e683483a214739761ed0777c33a723cd6cc80c0ed36b564e89cc77f015c884d0a6f2c05

  • memory/2852-0-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB

  • memory/2852-1-0x0000000000240000-0x0000000000246000-memory.dmp

    Filesize

    24KB

  • memory/2852-2-0x0000000000280000-0x0000000000286000-memory.dmp

    Filesize

    24KB

  • memory/2852-9-0x0000000000240000-0x0000000000246000-memory.dmp

    Filesize

    24KB

  • memory/2852-15-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB

  • memory/2956-18-0x00000000002C0000-0x00000000002C6000-memory.dmp

    Filesize

    24KB

  • memory/2956-20-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB

  • memory/2956-17-0x00000000004A0000-0x00000000004A6000-memory.dmp

    Filesize

    24KB